out clean. Cool the cake on rack 10 minutes then remove from the casserole to plate. Place the cake rounded side up. While the cake is cooling, sprinkle sesame seeds on ungreased cookie sheet. Bake in 300 oven about 5 minutes or until golden. (You'll use the seeds later to sprinkle over yoru cake.) Fill baking pan about 1/2 of the way to the top with cold water and ice cubes. Melt butter in saucepan over low heat. Stir in brown sugar. Cook over low heat 2 minutes stirring occasionally. Stir in milk . Heat to rolling boil, stirring constantly. Remove from heat and set the saucepan in the pan of cold water and ice. When you can comfortably hold your hand on the bottom of the saucepan, gradually stair in powdered sugar. Place the saucepan back in the pan of ice water and beat the sugar mixture until it becomes thick enough to spread. If the frosting is too thin, sugar; If it is too thick, add a few drops of hot water. ----